1 Scope
2
References
2.1 Normative references
2.2 Informative references
3
Terms and definitions
3.1 General definitions
3.2 Mechanical characteristics
3.3 Mode field characteristics
3.4 Glass geometry characteristics
3.5 Chromatic dispersion definitions
3.6 Other characteristics
4
Abbreviations and acronyms
5
Test methods
5.1 Test methods for the mode field diameter
5.1.1 Reference test method: The far-field scan
5.1.2 First alternative test method: The
variable aperture technique
5.1.3 Second alternative test method: The
near-field scan
5.1.4
Third alternative test method: Bidirectional backscatter difference
5.2 Test methods for the cladding diameter, core concentricity
error and cladding non‑circularity
5.2.1 Reference test method: The near-field
image technique
5.2.2 First alternative test method: The
refracted near-field technique
5.2.3 Second alternative test method: The
side-view technique
5.2.4 Third alternative test method: The
transmitted near-field technique
5.3 Test methods for the cut-off wavelength
5.3.1 Reference test method for the cut-off
wavelength (λc) of the primary coated fibre and reference
test method for the cut-off wavelength (lcj) of jumper cables:
The transmitted power technique
5.3.2 Alternative test method for λc: The split-mandrel technique
5.3.3 Reference test method for the cut-off
wavelength (λcc) of the cabled fibre: The transmitted power
technique
5.3.4 Alternative test method for the cut-off
wavelength (λcc) of the cabled fibre
5.4 Test methods for the attenuation
5.4.1 Reference test method: The cut-back
technique
5.4.2 First
alternative test method: The backscattering technique
5.4.3 Second alternative test method: The
insertion loss technique
5.5 Test methods for the chromatic dispersion
5.5.1 Reference test method: The phase-shift technique
5.5.2 First alternative test method: The
interferometric technique
5.5.3 Second alternative test method: The pulse
delay technique
5.6 Test methods for prooftesting
5.6.1 Reference test method: Longitudinal
tension
Appendix
I – Methods of cut-off wavelength interpolation
I.1 Limited negative error
method
I.2 Least squares method
Appendix
II – Test method for measuring chromatic dispersion uniformity based on the backscattering technique
II.1 General
II.2 Test apparatus
II.2.1 General considerations (as in 5.4.2.2.1)
II.2.2 Optical source (as in 5.4.2.2.2)
II.2.3 Optical coupling system (as in 5.4.2.2.3)
II.2.4 Branching device (as in 5.4.2.2.4)
II.2.5 Optical detector (as in 5.4.2.2.5)
II.2.6 Amplifier (as in 5.4.2.2.6)
II.2.7 Signal processor (as in 5.4.2.2.7)
II.2.8 Cladding mode stripper (as in 5.4.2.2.8)
II.2.9 Reference fibre
II.3 Measurement procedure
II.4 Presentation of the results
II.5 References